arm: mach-omap2: load/start remoteproc IPU1/IPU2

First check the presence of the ipu firmware in the boot partition.
If present enable the ipu and the related clocks & then move
on to load the firmware and eventually start remoteproc IPU1/IPU2.

do_enable_clocks by default puts the clock domains into auto
which does not work well with reset. Hence adding do_enable_ipu_clocks
function.

Signed-off-by: Keerthy <j-keerthy@ti.com>
[Amjad: fix IPU1_LOAD_ADDR and compile warnings]
Signed-off-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>

1 files changed, 95 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/boot-common.c b/arch/arm/mach-omap2/boot-common.c
index fdb8b479ea0..afc35856419 100644
--- a/arch/arm/mach-omap2/boot-common.c
+++ b/arch/arm/mach-omap2/boot-common.c
@@ -10,6 +10,8 @@
 #include <common.h>
 #include <ahci.h>
 #include <log.h>
+#include <dm/uclass.h>
+#include <fs_loader.h>
 #include <spl.h>
 #include <asm/global_data.h>
 #include <asm/omap_common.h>
@@ -19,9 +21,14 @@
 #include <watchdog.h>
 #include <scsi.h>
 #include <i2c.h>
+#include <remoteproc.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#define IPU1_LOAD_ADDR         (0xa17ff000)
+#define MAX_REMOTECORE_BIN_SIZE (8 * 0x100000)
+#define IPU2_LOAD_ADDR         (IPU1_LOAD_ADDR + MAX_REMOTECORE_BIN_SIZE)
+
 __weak u32 omap_sys_boot_device(void)
 {
 	return BOOT_DEVICE_NONE;
@@ -194,6 +201,91 @@ u32 spl_mmc_boot_mode(const u32 boot_device)
 	return gd->arch.omap_boot_mode;
 }
 
+int load_firmware(char *name_fw, u32 *loadaddr)
+{
+	struct udevice *fsdev;
+	int size = 0;
+
+	if (!IS_ENABLED(CONFIG_FS_LOADER))
+		return 0;
+
+	if (!*loadaddr)
+		return 0;
+
+	if (!uclass_get_device(UCLASS_FS_FIRMWARE_LOADER, 0, &fsdev)) {
+		size = request_firmware_into_buf(fsdev, name_fw,
+						 (void *)*loadaddr, 0, 0);
+	}
+
+	return size;
+}
+
+void spl_boot_ipu(void)
+{
+	int ret, size;
+	u32 loadaddr = IPU1_LOAD_ADDR;
+
+	if (!IS_ENABLED(CONFIG_SPL_BUILD) ||
+	    !IS_ENABLED(CONFIG_REMOTEPROC_TI_IPU))
+		return;
+
+	size = load_firmware("dra7-ipu1-fw.xem4", &loadaddr);
+	if (size <= 0) {
+		pr_err("Firmware loading failed\n");
+		goto skip_ipu1;
+	}
+
+	enable_ipu1_clocks();
+	ret = rproc_dev_init(0);
+	if (ret) {
+		debug("%s: IPU1 failed to initialize on rproc (%d)\n",
+		      __func__, ret);
+		goto skip_ipu1;
+	}
+
+	ret = rproc_load(0, IPU1_LOAD_ADDR, 0x2000000);
+	if (ret) {
+		debug("%s: IPU1 failed to load on rproc (%d)\n", __func__,
+		      ret);
+		goto skip_ipu1;
+	}
+
+	debug("Starting IPU1...\n");
+
+	ret = rproc_start(0);
+	if (ret)
+		debug("%s: IPU1 failed to start (%d)\n", __func__, ret);
+
+skip_ipu1:
+	loadaddr = IPU2_LOAD_ADDR;
+	size = load_firmware("dra7-ipu2-fw.xem4", &loadaddr);
+	if (size <= 0) {
+		pr_err("Firmware loading failed for ipu2\n");
+		return;
+	}
+
+	enable_ipu2_clocks();
+	ret = rproc_dev_init(1);
+	if (ret) {
+		debug("%s: IPU2 failed to initialize on rproc (%d)\n", __func__,
+		      ret);
+		return;
+	}
+
+	ret = rproc_load(1, IPU2_LOAD_ADDR, 0x2000000);
+	if (ret) {
+		debug("%s: IPU2 failed to load on rproc (%d)\n", __func__,
+		      ret);
+		return;
+	}
+
+	debug("Starting IPU2...\n");
+
+	ret = rproc_start(1);
+	if (ret)
+		debug("%s: IPU2 failed to start (%d)\n", __func__, ret);
+}
+
 void spl_board_init(void)
 {
 	/* Prepare console output */
@@ -214,6 +306,9 @@ void spl_board_init(void)
 #ifdef CONFIG_AM33XX
 	am33xx_spl_board_init();
 #endif
+	if (IS_ENABLED(CONFIG_SPL_BUILD) &&
+	    IS_ENABLED(CONFIG_REMOTEPROC_TI_IPU))
+		spl_boot_ipu();
 }
 
 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)